Police said they had four arrest orders as part of the
scheme, dubbed "Operation Black Blood," though two of them
involved suspects already in jail in the southern city of
Curitiba, the epicenter of a broader investigation into price
fixing and bribery on Petrobras contracts with engineering
firms.

Former Petrobras executives Pedro Barusco, Jorge Zelada and
Renato Duque were charged with corruption along with former SBM
sales agents Julio Faerman and Luis Eduardo Campos Barbosa da
Silva, according to a statement from federal prosecutors.

Anthony Mace and Didier Keller, both former SBM chief
executive officers, were charged with racketeering and
corruption as was Robert Zubiate, former senior vice president.